diff options
| -rw-r--r-- | arch/ppc64/kernel/prom.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/ppc64/kernel/prom.c b/arch/ppc64/kernel/prom.c index eb6538b58008..47727a6f7346 100644 --- a/arch/ppc64/kernel/prom.c +++ b/arch/ppc64/kernel/prom.c @@ -884,6 +884,7 @@ static int __init early_init_dt_scan_cpus(unsigned long node, { char *type = get_flat_dt_prop(node, "device_type", NULL); u32 *prop; + unsigned long size; /* We are scanning "cpu" nodes only */ if (type == NULL || strcmp(type, "cpu") != 0) @@ -929,6 +930,17 @@ static int __init early_init_dt_scan_cpus(unsigned long node, cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC; } + /* + * Check for an SMT capable CPU and set the CPU feature. We do + * this by looking at the size of the ibm,ppc-interrupt-server#s + * property + */ + prop = (u32 *)get_flat_dt_prop(node, "ibm,ppc-interrupt-server#s", + &size); + cur_cpu_spec->cpu_features &= ~CPU_FTR_SMT; + if (prop && ((size / sizeof(u32)) > 1)) + cur_cpu_spec->cpu_features |= CPU_FTR_SMT; + return 0; } |